Vitamins and minerals play an important role in maintaining homeostasis in the body. They help support complex biological processes like building cells, regulating different cell types, maintaining cellular structure and communication between cells. Vitamins are organic molecules required in small amounts that help enzymes function and control many body processes. There are 13 essential vitamins including vitamin C, K, D, and A. Minerals are inorganic molecules also needed in small amounts that the body cannot produce. They control several body functions and the 18 essential minerals include calcium, magnesium, potassium, and phosphorus.